A mud-lime crushed stone paving device and construction method for road base construction

Abstract

The present application relates to the technical field of road construction, and in particular to a mud-lime gravel paving device and a construction method for road base construction, wherein the mud-lime gravel paving device for road base construction comprises a vehicle body, a storage hopper, a discharging assembly and a flattening assembly, wherein the storage hopper is arranged on the vehicle body, the discharging assembly comprises a box body, the top of the box body is connected to the storage hopper, a discharging port is provided at the bottom of the box body, a multi-layer dividing plate is arranged in the box body, a plurality of discharging holes are provided on the dividing plate, the length of the dividing plate gradually increases from the top of the box body to the bottom, the material in the storage hopper falls onto the uppermost dividing plate, a moving part for driving the dividing plate to reciprocate is arranged on the box body, an opening and closing part for controlling the opening and closing degree of the discharging hole is arranged on the dividing plate, and the flattening assembly is used to flatten the material discharged from the discharging port. The present application has the effect of paving gravels of different sizes more evenly and flatly.

Description

Technical Field

[0001] The present application relates to the technical field of road construction, and in particular to a mud-lime gravel paving device and a construction method for road base construction. Background Art

[0002] Mud-lime macadam pavement refers to a mixed structure formed by rolling, grouting and infiltration of a certain amount of lime, relying on the interlocking of macadam and the bonding of clay. There are two construction methods for mud-lime macadam pavement: grouting and mixing. However, the grouting method has better effect.

[0003] The grouting method mainly includes the following steps: stone paving, preliminary rolling, grouting and re-rolling. When paving stones, the mud-lime crushed stones are paved by the paving device. Stone paving usually uses several crushed stones of different sizes. The largest size is laid at the bottom. After the stones of the same type and size are laid in the same layer, they are laid upward layer by layer in the order of decreasing crushed stone size.

[0004] When using crushed stones of different sizes, the existing paving devices are difficult to adapt to the changes in the crushed stone sizes, resulting in uneven laying of the crushed stones, thereby causing different stone laying thicknesses on the roadbed surface. Summary of the invention

[0005] In order to lay gravel of different sizes more evenly and smoothly, the present application provides a mud-lime gravel paving device and a construction method for road base construction.

[0006] In the first aspect, the present application provides a mud-lime gravel paving device for road base construction, which adopts the following technical solution:

[0007] A mud-lime gravel paving device for road base construction comprises a vehicle body, a storage hopper, a discharging assembly and a flattening assembly, wherein the storage hopper is arranged on the vehicle body, the discharging assembly comprises a box body, the top of the box body is connected to the storage hopper, the bottom of the box body is provided with a discharging port, the box body is provided with multiple layers of dividing plates, the dividing plates are provided with a plurality of discharging holes, the length of the dividing plates gradually increases from the top of the box body to the bottom, the material in the storage hopper falls onto the uppermost dividing plate, the box body is provided with a moving part for driving the dividing plate to move back and forth, the dividing plate is provided with an opening and closing part for controlling the opening and closing degree of the discharging hole, and the flattening assembly is used to flatten the material discharged from the discharging port.

[0008] By adopting the above technical scheme, the opening and closing parts are adjusted to adjust the opening degree of the discharge hole to the required opening, and the largest-sized gravel is first added to the storage hopper, and the gravel released from the storage hopper falls onto the uppermost dividing plate, and the moving part drives the dividing plate to move, so that the gravel falls from the discharge hole or both sides to the next dividing plate, and passes through multiple layers of dividing plates in turn and falls to the ground. The gravel is divided many times on the dividing plate, so that the gravel is evenly distributed on the bottom dividing plate and falls, and then the gravel is further flattened by the flattening component; after completing the paving of gravel of the same size, the opening of the discharge hole is adjusted, and then gravel of another size is put in and repeated; thereby achieving the distribution of the material by adjusting the diameter of the discharge hole according to different gravel sizes, which is conducive to paving gravel of different sizes evenly and flatly.

[0009] Optionally, a plurality of slide grooves are provided in the box body, and the dividing plates are respectively slidably connected in the slide grooves, and the dividing plates slide along the length direction of the box body. The moving part includes a reciprocating screw rotatably arranged on the box body, and the rotation axis of the reciprocating screw is parallel to the length direction of the box body. A connecting rod is threadedly sleeved on the reciprocating screw, and multiple layers of the dividing plates are connected to the connecting rod. A motor for driving the reciprocating screw to rotate is provided on the box body.

[0010] By adopting the above technical solution, the motor drives the reciprocating screw to rotate, the reciprocating screw drives the connecting rod to move, and the connecting rod drives multiple dividing plates to move, so that the material falling onto the dividing plate can fall from the discharge hole.

[0011] Optionally, both ends of the dividing plate at the bottom of the box body are provided with extension plates, the extension plates are slidably connected to the dividing plate, the extension plates slide along the length direction of the dividing plate, the extension plates are also provided with discharge holes, and the dividing plate is provided with adjustment parts for adjusting the position of the extension plates.

[0012] By adopting the above technical solution, the length of the lowest layer of the dividing plate can be adjusted by moving the extension plate, so as to adjust the paving width according to the width of the road, thereby improving the applicability of the device.

[0013] Optionally, placement grooves are provided at both ends of the dividing plate at the bottom of the box body, the extension plate is slidably connected in the placement grooves, the adjusting piece includes an adjusting screw, a threaded hole is provided on the extension plate, the adjusting screw is threadedly connected in the threaded hole, the placement groove passes through the side of the dividing plate close to the adjusting screw, a connecting groove is provided on the box body, the placement groove is connected with the connecting groove, the adjusting screw extends out of the box body through the connecting groove, a fixing block is sleeved on the adjusting screw, and the fixing block abuts against the side of the dividing plate.

[0014] By adopting the above technical solution, the adjusting screw is rotated and moved toward the threaded hole, so that the fixing block is pressed against the side of the dividing plate, thereby achieving fixation between the dividing plate and the extension plate.

[0015] Optionally, the opening and closing part includes two opening and closing plates slidably arranged in a dividing plate, the two opening and closing plates are respectively located on both sides of the discharge hole and slide in a direction close to or away from the discharge hole, an adjusting groove is provided on the dividing plate, the two opening and closing plates are both slidably connected in the adjusting groove, two limit blocks are slidably arranged on the dividing plate, the limit blocks are located in the adjusting groove, the two opening and closing plates are both located between the two limit blocks and abut against the limit blocks, a bidirectional lead screw is rotatably arranged in the dividing plate, the two limit blocks are respectively threadedly connected to the two ends of the bidirectional lead screw, one end of the bidirectional lead screw extends outside the box body, and an elastic part is provided on the opening and closing plate for driving the two opening and closing plates to slide toward a side away from each other.

[0016] By adopting the above technical solution, the bidirectional screw is rotated, and the bidirectional screw drives the two limit blocks to slide toward the middle, thereby driving the two opening and closing plates to approach each other, thereby reducing the opening degree of the discharge hole. When the two limit blocks are moved toward both sides, the elastic member drives the two opening and closing plates to move toward both sides away from each other, thereby increasing the opening degree of the discharge hole, so as to adapt to the discharge of crushed stones of different sizes and control the discharge speed.

[0017] Optionally, the elastic member includes a spring disposed between the two opening and closing plates, and two ends of the spring are respectively connected to the two opening and closing plates.

[0018] By adopting the above technical solution, the spring drives the two opening and closing plates to slide in directions away from each other, thereby increasing the opening of the discharge hole.

[0019] Optionally, the flattening assembly includes a scraper arranged on the side of the box body, and the box body is provided with a lifting member for adjusting the height of the scraper.

[0020] By adopting the above technical solution, the height of the scraper is adjusted by the lifting member to adapt to different paving thicknesses. After the gravel falls to the ground, the scraper flattens the gravel, further ensuring that the gravel is laid flat.

[0021] Optionally, the lifting member includes an adjusting screw arranged on the box body, the rotation axis of the adjusting screw is along the vertical direction, a slider is arranged on the scraper, the slider is threadedly sleeved on the adjusting screw, a T-slot is opened on the box body, the slider is slidably connected in the T-slot, and the slider is adapted to the T-slot.

[0022] By adopting the above technical solution, the adjusting screw is rotated, and the adjusting screw drives the slider to slide in the T-shaped groove, thereby adjusting the height of the scraper to facilitate adjusting the laying thickness of the crushed stone.

[0023] Optionally, two guide plates are provided on one side of the scraper close to the box body, and the guide plates are located between the scraper and the box body. One end of the two guide plates is connected to the middle of the box body, and the other end is respectively connected to two ends of the scraper.

[0024] By adopting the above technical solution, the two guide plates first contact the gravel at one end of the middle part of the box body. During the movement of the vehicle body, the excess gravel follows the guide plates to move to both sides, thereby dispersing the gravel for easy paving of the gravel.

[0025] In the second aspect, the present application provides a construction method of mud-lime crushed stone paving material for road base construction, adopting the following technical scheme:

[0026] A construction method of mud-lime crushed stone paving material for road base construction, using a mud-lime crushed stone paving material device for road base construction, further comprising:

[0027] S1: Adjust the opening and closing parts to adjust the opening degree of the discharge hole to the required opening degree, add the largest-sized gravel into the storage hopper first, start the vehicle body to move on the roadbed, and release the gravel in the storage hopper;

[0028] S2: The crushed stones released from the storage hopper fall onto the uppermost dividing plate, and the moving parts drive the dividing plate to move, so that the crushed stones fall from the discharge hole or both sides to the next dividing plate, and then fall to the ground after passing through multiple dividing plates in sequence. The crushed stones are divided multiple times on the dividing plates, so that the crushed stones are evenly distributed on the bottom dividing plate and fall, and then the crushed stones are further flattened by the flattening component;

[0029] S3: After finishing laying the gravel of the same size, stop the machine to adjust the opening of the discharge hole, then put in gravel of another size and repeat the laying until it is completely completed.

[0030] In summary, the present application includes at least one of the following beneficial technical effects:

[0031] 1. Adjust the opening and closing parts to adjust the opening degree of the discharge hole to the required opening, first add the largest size of crushed stone into the storage hopper, and the crushed stone released from the storage hopper falls onto the uppermost dividing plate, and the moving parts drive the dividing plate to move, so that the crushed stone falls from the discharge hole or both sides to the next layer of dividing plates, and then passes through multiple layers of dividing plates and falls to the ground. The crushed stone is divided many times on the dividing plate, so that the crushed stone is evenly distributed on the bottom dividing plate and falls, and then the crushed stone is further flattened by the flattening component; after the same size of crushed stone is laid, adjust the opening of the discharge hole, and then put in another size of crushed stone and repeat in sequence; thus, the diameter of the discharge hole is adjusted according to different crushed stone sizes for dividing, which is conducive to laying crushed stones of different sizes evenly and flatly;

[0032] 2. The height of the scraper is adjusted by the lifting piece to adapt to different paving thicknesses. After the gravel falls to the ground, the scraper will flatten the gravel to further ensure that the gravel is laid flat. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0034] Figure 2 It is a schematic diagram of the structural section along the length direction of the box body of an embodiment of the present application.

[0035] Figure 3 It is a schematic diagram of the structure of the box body of the embodiment of the present application.

[0036] Figure 4 It is a schematic diagram of the structural cross-section in the width direction of the box body of the embodiment of the present application.

[0037] Figure 5 yes Figure 4 Schematic diagram of the enlarged structure of part A.

[0038] Figure 6 It is a schematic diagram of the connection structure of the extension plate of the embodiment of the present application.

[0039] Figure 7 It is a schematic diagram of the structure of the scraper of the embodiment of the present application.

[0040] Explanation of the reference numerals in the accompanying drawings: 1. Car body; 2. Storage hopper; 3. Box body; 4. Discharge port; 5. Dividing plate; 6. Discharge hole; 7. Slide; 8. Reciprocating screw; 9. Connecting rod; 10. Motor; 11. Extension plate; 12. Placement slot; 13. Adjusting screw; 14. Connecting slot; 15. Fixing block; 16. Opening and closing plate; 17. Adjusting slot; 18. Limiting block; 19. Bidirectional screw; 20. Spring; 21. Scraper; 22. Adjusting screw; 23. Sliding block; 24. T-slot; 25. Guide plate; 26. First running slot; 27. Second running slot. DETAILED DESCRIPTION

[0041] The following is combined with Figure 1-7 This application is described in further detail.

[0042] The present application embodiment discloses a mud-lime gravel paving device for road base construction. Figure 1 and Figure 2The mud-lime gravel paving device for road base construction includes a vehicle body 1, a storage hopper 2, a discharging assembly and a flattening assembly. The storage hopper 2 is welded and fixed on the vehicle body 1. The discharging assembly includes a box body 3. The lower port of the storage hopper 2 is welded and fixed to the middle of the top of the box body 3 and communicated. A gate valve is installed at the bottom of the storage hopper 2 to control the discharge of the storage hopper 2. The length direction of the box body 3 is parallel to the width direction of the road, and a discharging port 4 is opened at the bottom of the box body 3.

[0043] Reference Figure 1 and Figure 2 , a plurality of layers of dividing plates 5 are slidably connected in the box body 3, the length direction of the dividing plates 5 is parallel to the length direction of the box body 3, the dividing plates 5 slide along the length direction of the box body 3, a plurality of chutes 7 are provided on both side walls of the box body 3, the dividing plates 5 are slidably connected in the chutes 7 on both sides of the box body 3; a plurality of discharge holes 6 are provided on the dividing plates 5, the discharge holes 6 between two adjacent layers of dividing plates 5 are staggered, and the length of the dividing plates 5 gradually increases from the top to the bottom of the box body 3. The material in the storage hopper 2 falls onto the uppermost layer of the dividing plates 5, the box body 3 is provided with a moving part for driving the dividing plates 5 to reciprocate, and the dividing plates 5 are provided with an opening and closing part for controlling the opening and closing degree of the discharge holes 6.

[0044] Reference Figure 3 and Figure 4 The moving part includes a reciprocating screw 8 rotatably connected to the side wall of the box body 3, the rotation axis of the reciprocating screw 8 is parallel to the length direction of the box body 3, and a connecting rod 9 is threadedly sleeved on the reciprocating screw 8. Two thread grooves are provided on the reciprocating screw 8, so that the connecting rod 9 can reciprocate without changing the rotation direction of the reciprocating screw 8. The connecting rod 9 is a T-shaped rod, one rod of the connecting rod 9 is located in the box body 3, and the multi-layer dividing plates 5 are all fixedly connected to the connecting rod 9; the other rod of the connecting rod 9 extends outside the box body 3 and is threadedly connected to the reciprocating screw 8. A first running groove 26 is provided on the box body 3, and one rod of the connecting rod 9 is slidably connected in the first running groove 26. A motor 10 for driving the reciprocating screw 8 to rotate is bolted to the box body 3, and the output shaft of the motor 10 is fixedly connected to one end of the reciprocating screw 8, and power is provided to the motor 10 through the vehicle body 1.

[0045] Reference Figure 3 , Figure 4 and Figure 5The opening and closing member includes two opening and closing plates 16 slidably placed in the dividing plate 5. The length direction of the two opening and closing plates 16 is parallel to the length direction of the dividing plate 5. The two opening and closing plates 16 are respectively located on both sides of the discharge hole 6 and slide in the direction close to or away from the discharge hole 6. An adjustment groove 17 is provided on the dividing plate 5. The two opening and closing plates 16 are both slidably connected in the adjustment groove 17. Two limit blocks 18 are slidably connected in the dividing plate 5. The limit blocks 18 are located in the adjustment groove 17. The two opening and closing plates 16 are both located between the two limit blocks 18 and abut against the limit blocks 18. A bidirectional lead screw 19 is rotatably connected in the dividing plate 5. The two ends of the bidirectional lead screw 19 have opposite screw rotation directions. The length direction of the bidirectional lead screw 19 is parallel to the width direction of the dividing plate 5. The two limit blocks 18 are respectively threadedly connected to the two ends of the bidirectional lead screw 19. The box body 3 is provided with a second running groove 27, one end of the bidirectional lead screw 19 passes through the second running groove 27 and extends outside the box body 3, the bidirectional lead screw 19 slides in the second running groove 27, and an elastic member for driving the two opening and closing plates 16 to slide toward the side away from each other is provided on the opening and closing plates 16. The elastic member includes a spring 20 connected between the two opening and closing plates 16, and the two ends of the spring 20 are respectively fixedly connected to the side of the two opening and closing plates 16 that are close to each other, and the spring 20 is in a stretched state.

[0046] By rotating the bidirectional lead screw 19, the bidirectional lead screw 19 drives the two limit blocks 18 to slide toward the middle, thereby driving the two opening and closing plates 16 to approach each other, reducing the opening degree of the discharge hole 6; when the two limit blocks 18 are moved toward both sides, the spring 20 drives the two opening and closing plates 16 to move toward both sides away from each other, thereby increasing the opening degree of the discharge hole 6, so as to adapt to the discharge of crushed stones of different sizes and control the discharge speed.

[0047] Reference Figure 2 , Figure 3 and Figure 6 , both ends of the dividing plate 5 at the bottom of the box body 3 are provided with placement grooves 12, and the placement grooves 12 run through the ends of the dividing plate 5. Both ends of the dividing plate 5 at the bottom of the box body 3 are connected with extension plates 11, and the extension plates 11 are slidably connected to the placement grooves 12, and the extension plates 11 slide along the length direction of the dividing plate 5. The extension plate 11 is also provided with a discharge hole 6, and the dividing plate 5 is provided with an adjustment member for adjusting the position of the extension plate 11. The extension plate 11 is an L-shaped plate, so that the end of the extension plate 11 can prevent gravel from falling from the end to the ground, reducing the possibility of gravel accumulation on both sides. In the present application, the sum of the lengths of the reciprocating screw 8, the dividing plate 5 and the two extension plates is less than the length inside the box body 3. When the extension plate 11 is increased to the maximum position, there is a certain gap between the extension plate 11 and the end of the box body 3, and the dividing plate 5 at the bottom still has space to move.

[0048] Reference Figure 1 and Figure 6The adjusting member includes an adjusting screw 13. A threaded hole is provided on the extension plate 11. The adjusting screw 13 is threadedly connected in the threaded hole. The placement groove 12 passes through the side of the material dividing plate 5 close to the adjusting screw. A connecting groove 14 is provided on the side wall of the box body 3. The placement groove 12 is connected to the connecting groove 14 on the side. The adjusting screw 13 passes through the connecting groove 14 and extends to the outside of the box body 3. The adjusting screw 13 is slidably connected to the side of the placement groove 12 and the connecting groove 14. A fixed block 15 is fixedly sleeved on the adjusting screw 13. The fixed block 15 abuts against the side of the material dividing plate 5 and is slidably connected in the connecting groove 14. Two opening and closing plates 16 are located below the extension plate 11. The length of the opening and closing plates 16 is equal to the sum of the length of the two extension plates 11 and the length of the material dividing plate 5 at the bottom of the box body 3.

[0049] Reference Figure 4 and Figure 7 The flattening assembly includes a scraper 21 connected to the side of the box body 3. The scraper 21 is located behind the box body 3 along the direction of travel of the vehicle body 1. The scraper 21 is an L-shaped plate. The box body 3 is provided with a lifting member for adjusting the height of the scraper 21. The lifting member includes an adjusting screw 22 rotatably connected to the side wall of the box body 3. The box body 3 is provided with a T-shaped slot 24. The adjusting screw 22 is rotatably connected in the T-shaped slot 24. One end of the adjusting screw 22 extends to the top of the box body 3. The rotation axis of the adjusting screw 22 is in the vertical direction. A slider 23 is welded and fixed to the scraper 21. The slider 23 is threadedly sleeved on the adjusting screw 22. The slider 23 is slidably connected in the T-shaped slot 24. The slider 23 is adapted to the T-shaped slot 24. Two guide plates 25 are welded and fixed on one side of the scraper 21 close to the box 3. The guide plates 25 are located between the scraper 21 and the box 3. One end of the two guide plates 25 is connected to the middle of the box 3, and the other end is connected to both ends of the scraper 21. Thus, the guide plates 25 are tilted, and one end of the two guide plates 25 in the middle of the box 3 first contacts the gravel. During the movement of the vehicle body 1, the excess gravel follows the guide plates 25 and moves to both sides, thereby dispersing the gravel to facilitate paving the gravel.

[0050] The implementation principle of a mud-lime gravel paving device for road base construction in the embodiment of the present application is as follows: adjust the positions of the two opening and closing plates 16 to adjust the opening degree of the discharge hole 6 to the required opening, first add the gravel of the largest size into the storage hopper 2, and the gravel discharged from the storage hopper 2 falls onto the uppermost dividing plate 5, and the reciprocating screw 8 drives the dividing plate 5 to move, so that the gravel falls from the discharge hole 6 or both sides to the next layer of dividing plate 5, passes through the multiple layers of dividing plates 5 in turn and falls to the ground, and the gravel is divided many times on the dividing plate 5, so that the gravel is evenly distributed on the bottom dividing plate 5 and falls, and then the scraper 21 is used to further flatten the gravel; after completing the paving of gravel of the same size, adjust the opening of the discharge hole 6, and then put in gravel of another size and repeat in sequence; thereby achieving the adjustment of the diameter of the discharge hole 6 according to different gravel sizes for dividing, which is conducive to paving gravel of different sizes evenly and flatly.

[0051] The present application embodiment discloses a construction method for a mud-lime crushed stone paving material for road base construction, referring to Figure 1 and Figure 2 , the construction method of the mud-lime crushed stone paving material for road base construction uses the mud-lime crushed stone paving material device for road base construction, and also includes;

[0052] S1: Adjust the position of the opening and closing plate 16, adjust the opening degree of the discharge hole 6 to the required opening degree, first add the largest-sized crushed stones into the storage hopper 2, start the vehicle body 1 to move on the roadbed, and release the crushed stones in the storage hopper 2;

[0053] S2: The crushed stones discharged from the storage hopper 2 fall onto the uppermost dividing plate 5, and the dividing plate 5 is driven to move by the reciprocating screw 8, so that the crushed stones fall from the discharge hole 6 or both sides to the next dividing plate 5, and then fall to the ground after passing through multiple layers of dividing plates 5 in sequence. The crushed stones are divided multiple times on the dividing plate 5, so that the crushed stones are evenly distributed on the bottom dividing plate 5 and fall, and then the scraper 21 further flattens the crushed stones;

[0054] S3: After the paving of the same size of crushed stones is completed, the machine is stopped to adjust the opening of the discharge hole 6, and then crushed stones of another size are put in, and the paving is repeated until the paving is completely completed.

[0055] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A mud-lime gravel paving device for road base construction, characterized in that: The invention comprises a vehicle body (1), a storage hopper (2), a discharge assembly and a flattening assembly, wherein the storage hopper (2) is arranged on the vehicle body (1), the discharge assembly comprises a box body (3), the top of the box body (3) is connected to the storage hopper (2), the bottom of the box body (3) is provided with a discharge port (4), a plurality of dividing plates (5) are arranged in the box body (3), a plurality of discharge holes (6) are arranged on the dividing plates (5), the length of the dividing plates (5) gradually increases from the top to the bottom of the box body (3), the material in the storage hopper (2) falls onto the uppermost dividing plate (5), the box body (3) is provided with a moving part for driving the dividing plate (5) to move back and forth, the dividing plate (5) is provided with an opening and closing part for controlling the opening and closing degree of the discharge hole (6), and the flattening assembly is used to flatten the material discharged from the discharge port (4).

2. A mud-lime-gravel paving device for road base construction according to claim 1, characterized in that: A plurality of slide grooves (7) are provided in the box body (3), and the dividing plates (5) are respectively slidably connected in the slide grooves (7). The dividing plates (5) slide along the length direction of the box body (3). The moving part includes a reciprocating screw (8) rotatably arranged on the box body (3), and the rotation axis of the reciprocating screw (8) is parallel to the length direction of the box body (3). A connecting rod (9) is threadedly sleeved on the reciprocating screw (8), and multiple layers of the dividing plates (5) are all connected to the connecting rod (9). A motor (10) for driving the reciprocating screw (8) to rotate is provided on the box body (3).

3. The mud-lime-gravel paving device for road base construction according to claim 1, characterized in that: Both ends of the dividing plate (5) at the bottom of the box body (3) are provided with extension plates (11), and the extension plates (11) are slidably connected to the dividing plate (5). The extension plates (11) slide along the length direction of the dividing plate (5). The extension plates (11) are also provided with discharge holes (6), and the dividing plate (5) is provided with an adjusting part for adjusting the position of the extension plates (11).

4. A mud-lime gravel paving device for road base construction according to claim 3, characterized in that: Both ends of the dividing plate (5) at the bottom of the box body (3) are provided with placement grooves (12), the extension plate (11) is slidably connected in the placement grooves (12), the adjustment member includes an adjustment screw (13), the extension plate (11) is provided with a threaded hole, the adjustment screw (13) is threadedly connected in the threaded hole, the placement groove (12) passes through the side of the dividing plate (5) close to the adjustment screw (13), the box body (3) is provided with a connecting groove (14), the placement groove (12) is connected to the connecting groove (14), the adjustment screw (13) passes through the connecting groove (14) and extends outside the box body (3), the adjustment screw (13) is sleeved with a fixing block (15), and the fixing block (15) abuts against the side of the dividing plate (5).

5. The mud-lime-gravel paving device for road base construction according to claim 1, characterized in that: The opening and closing member comprises two opening and closing plates (16) slidably arranged in the material distribution plate (5), the two opening and closing plates (16) are respectively located on both sides of the discharge hole (6) and slide in a direction close to or away from the discharge hole (6), the material distribution plate (5) is provided with an adjustment groove (17), the two opening and closing plates (16) are both slidably connected in the adjustment groove (17), and the material distribution plate (5) is slidably provided with two limit blocks (18), the limit blocks (18) are located in the adjustment groove ( 17), the two opening and closing plates (16) are located between the two limit blocks (18) and abut against the limit blocks (18), a bidirectional lead screw (19) is rotatably arranged in the dividing plate (5), the two limit blocks (18) are respectively threadedly connected to the two ends of the bidirectional lead screw (19), one end of the bidirectional lead screw (19) extends outside the box body (3), and an elastic member is arranged on the opening and closing plates (16) for driving the two opening and closing plates (16) to slide toward a side away from each other.

6. The mud-lime-gravel paving device for road base construction according to claim 5, characterized in that: The elastic member comprises a spring (20) arranged between two opening and closing plates (16), and two ends of the spring (20) are respectively connected to the two opening and closing plates (16).

7. The mud-lime-gravel paving device for road base construction according to claim 1, characterized in that: The flattening assembly comprises a scraper (21) arranged on the side of the box body (3), and a lifting member for adjusting the height of the scraper (21) is arranged on the box body (3).

8. The mud-lime-gravel paving device for road base construction according to claim 7, characterized in that: The lifting member comprises an adjusting screw (22) arranged on the box body (3), the rotation axis of the adjusting screw (22) is along the vertical direction, a slider (23) is arranged on the scraper (21), the slider (23) is threadedly sleeved on the adjusting screw (22), a T-shaped slot (24) is opened on the box body (3), the slider (23) is slidably connected in the T-shaped slot (24), and the slider (23) is adapted to the T-shaped slot (24).

9. The mud-lime-gravel paving device for road base construction according to claim 7, characterized in that: Two guide plates (25) are provided on one side of the scraper (21) close to the box (3); the guide plates (25) are located between the scraper (21) and the box (3); one end of the two guide plates (25) is connected to the middle of the box (3), and the other end is respectively connected to the two ends of the scraper (21).

10. A construction method for mud-lime crushed stone paving material for road base construction, characterized in that: The device for paving road base with mud and crushed stone as claimed in any one of claims 1 to 8 further comprises: S1: adjusting the opening and closing parts to adjust the opening degree of the discharge hole (6) to the required opening degree, first adding the largest-sized crushed stones into the storage hopper (2), starting the vehicle body (1) to move on the roadbed, and releasing the crushed stones in the storage hopper (2); S2: The crushed stones discharged from the storage hopper (2) fall onto the uppermost dividing plate (5), and the moving part drives the dividing plate (5) to move, so that the crushed stones fall from the discharge hole (6) or both sides to the next dividing plate (5), and then fall to the ground after passing through multiple layers of dividing plates (5) in sequence. The crushed stones are divided multiple times on the dividing plate (5), so that the crushed stones are evenly distributed on the dividing plate (5) at the bottom and fall, and then the crushed stones are further flattened by the flattening component; S3: After the paving of the same size of crushed stones is completed, the machine is stopped to adjust the opening of the discharge hole (6), and then crushed stones of another size are put in, and the paving is repeated until the paving is completely completed.

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